Mercurial > hg > orthanc-stone
annotate Platforms/Generic/Oracle.cpp @ 271:46c5296d867e am-2
OracleWebService and BasicSdlApplicationContext using the same global mutex
| author | am@osimis.io |
|---|---|
| date | Thu, 23 Aug 2018 17:12:54 +0200 |
| parents | 5412adf19980 |
| children | 14ef1227120f |
| rev | line source |
|---|---|
| 80 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
|
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium |
| 80 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "Oracle.h" | |
| 23 | |
|
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24 #include <Core/Logging.h> |
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25 #include <Core/MultiThreading/SharedMessageQueue.h> |
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26 #include <Core/OrthancException.h> |
| 80 | 27 |
| 28 #include <vector> | |
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29 #include <stdio.h> |
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30 #include <boost/thread/mutex.hpp> |
| 80 | 31 |
| 32 namespace OrthancStone | |
| 33 { | |
| 34 class Oracle::PImpl | |
| 35 { | |
| 36 private: | |
| 37 enum State | |
| 38 { | |
| 39 State_Init, | |
| 40 State_Started, | |
| 41 State_Stopped | |
| 42 }; | |
| 43 | |
| 44 boost::mutex oracleMutex_; | |
| 45 State state_; | |
| 46 std::vector<boost::thread*> threads_; | |
| 47 Orthanc::SharedMessageQueue queue_; | |
| 48 | |
| 49 static void Worker(PImpl* that) | |
| 50 { | |
| 51 for (;;) | |
| 52 { | |
| 53 State state; | |
| 54 | |
| 55 { | |
| 56 boost::mutex::scoped_lock lock(that->oracleMutex_); | |
| 57 state = that->state_; | |
| 58 } | |
| 59 | |
| 60 if (state == State_Stopped) | |
| 61 { | |
| 62 break; | |
| 63 } | |
| 64 | |
| 65 std::auto_ptr<Orthanc::IDynamicObject> item(that->queue_.Dequeue(100)); | |
| 66 if (item.get() != NULL) | |
| 67 { | |
| 68 IOracleCommand& command = dynamic_cast<IOracleCommand&>(*item); | |
| 69 command.Execute(); | |
| 70 | |
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71 // Random sleeping to test |
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72 //boost::this_thread::sleep(boost::posix_time::milliseconds(50 * (1 + rand() % 10))); |
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73 |
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74 command.Commit(); |
| 80 | 75 } |
| 76 } | |
| 77 } | |
| 78 | |
| 79 public: | |
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80 PImpl(unsigned int threadCount) : |
| 80 | 81 state_(State_Init), |
| 82 threads_(threadCount) | |
| 83 { | |
| 84 } | |
| 85 | |
| 86 ~PImpl() | |
| 87 { | |
| 88 if (state_ == State_Started) | |
| 89 { | |
| 90 LOG(ERROR) << "You should have manually called Oracle::Stop()"; | |
| 91 Stop(); | |
| 92 } | |
| 93 } | |
| 94 | |
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95 Orthanc::SharedMessageQueue& GetQueue() |
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96 { |
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97 return queue_; |
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98 } |
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99 |
| 80 | 100 void Submit(IOracleCommand* command) |
| 101 { | |
| 102 std::auto_ptr<IOracleCommand> protection(command); | |
| 103 | |
| 104 if (command == NULL) | |
| 105 { | |
| 106 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 107 } | |
| 108 | |
| 109 boost::mutex::scoped_lock lock(oracleMutex_); | |
| 110 | |
| 111 switch (state_) | |
| 112 { | |
| 113 case State_Init: | |
| 114 case State_Started: | |
| 115 queue_.Enqueue(protection.release()); | |
| 116 break; | |
| 117 | |
| 118 case State_Stopped: | |
| 119 LOG(ERROR) << "Cannot schedule a request to the Oracle after having " | |
| 120 << "called Oracle::Stop()"; | |
| 121 break; | |
| 122 | |
| 123 default: | |
| 124 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 125 } | |
| 126 | |
| 127 } | |
| 128 | |
| 129 void Start() | |
| 130 { | |
| 131 boost::mutex::scoped_lock lock(oracleMutex_); | |
| 132 | |
| 133 if (state_ != State_Init) | |
| 134 { | |
| 135 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 136 } | |
| 137 | |
| 138 for (size_t i = 0; i < threads_.size(); i++) | |
| 139 { | |
| 140 threads_[i] = new boost::thread(Worker, this); | |
| 141 } | |
| 142 | |
| 143 state_ = State_Started; | |
| 144 } | |
| 145 | |
| 146 void Stop() | |
| 147 { | |
| 148 { | |
| 149 boost::mutex::scoped_lock lock(oracleMutex_); | |
| 150 | |
| 151 if (state_ != State_Started) | |
| 152 { | |
| 153 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 154 } | |
| 155 | |
| 156 state_ = State_Stopped; | |
| 157 } | |
| 158 | |
| 159 for (size_t i = 0; i < threads_.size(); i++) | |
| 160 { | |
| 161 if (threads_[i] != NULL) | |
| 162 { | |
| 163 if (threads_[i]->joinable()) | |
| 164 { | |
| 165 threads_[i]->join(); | |
| 166 } | |
| 167 | |
| 168 delete threads_[i]; | |
| 169 } | |
| 170 } | |
| 171 } | |
| 172 }; | |
| 173 | |
| 174 | |
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175 Oracle::Oracle(unsigned int threadCount) : |
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176 pimpl_(new PImpl(threadCount)) |
| 80 | 177 { |
| 178 } | |
| 179 | |
| 180 void Oracle::Start() | |
| 181 { | |
| 182 pimpl_->Start(); | |
| 183 } | |
| 184 | |
| 185 | |
| 186 void Oracle::Submit(IOracleCommand* command) | |
| 187 { | |
| 188 pimpl_->Submit(command); | |
| 189 } | |
| 190 | |
| 191 | |
| 192 void Oracle::Stop() | |
| 193 { | |
| 194 pimpl_->Stop(); | |
| 195 } | |
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196 |
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197 |
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198 void Oracle::WaitEmpty() |
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199 { |
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200 pimpl_->GetQueue().WaitEmpty(50); |
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201 } |
| 80 | 202 } |